Scraping device for galvanizing apparatus



June 3,1924. 1,496,068

W. RAWLEY ET AL SCRAPING DEVICE FOR GALVANIZING APPARATUS Filed March1'7, 1922 3 Sheets-Sheet l,v

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' W.'RAWLEY ET AL SCRAPING DEVICE FOR GALVANIZING APPARATUS June 3,1924.

' W. RAWLEY ET AL SCRAPING DEVICE FOR GALVANIZING APPARATUS PatentedJune 3, 1924.

UNITED STATES PATENT oFFlcr..

WAYNE RAWLEY, OF PITTSBURGH, AND GRANDv A. PLUSKEY, 0F MILLVALE, PENN-SYLVANIA, ASSIGNORS T0 BLAW-.KNOX COMPANY, 0F PITTSBURGH, PENNSYL-VANIA, A CORPORATION OF NEW JERSEY. V

SCRAPING DEVICE FOR GALVANIZING APPARATUS.

Application led March 17, 1922. Serial No. 544,506.

To all whom t may concern.' l

Be it known that We, WAYNE RAWLEY and ORAND A. PLUSKEY, residing atPittsburgh, county of Allegheny, Pennsylvania,l and Millvale, county ofAllegheny, Pennsylvania, respectively, have invented a new and usefulImprovement in Scraping Devices for Galvanizing Apparatus, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanyingdrawings, forming part of this specification, in

Figure 1 is an end elevation of a galvanizing apparatus, partly brokenaway, embodying the present invention, and

Figures 2, 3 and 4 are detail views illustrating the scraping device.

The present invention relates broadly to coating machines, and moreparticularly to a galvanizing apparatus and a scraping device therefor.

Heretofore in the art to which the present invention relatesaconsiderable diculty has been experienced in uniformly and quicklyremoving from a plurality of galvanized shapes any surplus spelter. Thishas been particularly true where production has been an important factorand the shapes were handled in groups.

The present invention provides a scraping device for use in connectionwith galvanizing apparatus whereby large production of uniforlmly coatedmetallic shapes is made possib e.

The drawings, constituting a part of this specification, areillustrative of one embodiment of our invention, and it Will be apparentthat changes may be made in the construction and operation of the partswithout departing from the spirit of the invention or the scope of ourbroader claims.

In the drawings, there is illustrated an apparatus particularly adaptedfor galvanizing structural shapes such as angle irons, but the apparatusis equally adapted for use with other shapes. The present apparatuscomprises a charging platform 2 having supports 3 thereon for receivingthe lshapes 4 to be galvanized. The shapes may be supplied to thesupports 3 in any desired manner, but are preferably arranged thereonsubstantially as illustrated whereby they may be easily inspected by anoperator, or operators on the charging platform. From this platform theshapes ma be delivered in groups of any desired num er toa galvanizingpoty 5 by means of suitably arranged chargmg conveyors 6. The shapesa'sdischarged into the galvanizing pot may be moved from one sidethereof to the other by suitable pushers 7, and after the desiredinterval may be elevated from the spelter bath by a suitable elevatingmechanism illustrated as comprising a crank arm 8 adapted to be operatedby a hand wheel 9. y

The foregoing features constitute noimportant part of the presentinvention, but comprise means for delivering the shapes to thegalvanizing pot in groups and for elevating the same therefrom in groupsas desired. These features of the invention may be constructed inaccordance with our copending application Serial No. 544,507, filedMarch 17 1922.

Arranged on the galvanizing pot 5 adjacent one end thereof is a bracket10 carrying alower thereon a plurality of fixed scraping projections 12.Each of these projections, in the embodiment of the inventionillustrated, is

provided with sides arranged at substantiall ly right angles to eachother and terminatingvin a slightly rounded apex adapted to fit scrapingmember 11 having formed into the angle between the sldes of the shapes4. These projections may also each be formed With shoulders 13 adaptedto'cooperate with the edges of the shapes 4.

. Cooperating with the galvanizing pot 5 is a hood 14 having avertically extending wallv 15. Mounted at one end on a suitable pivot 16carried by a vertical wall 15, and at the opposite end on a similarpivot 17 carried by the bracket 18 is a frame 19. This frame comprisesside arms between the ,free ends of Y which extends a cross bar 20.Pivotally mounted on the cross bar 20 are a plurality of independentscraping members 21 having scraping recesses formed therein and adaptedto cooperate with the outside portions of the shapes being scraped. Eachof the members 21 is resiliently or yieldingly mounted for verticalmovement independent of the others,.to compensate for any irregularitiesin the shapes 4. This mounting comprises compression sprin 22surrounding ide pins 23. The gui e pins 23 at their ower ends'passthrough the members 21 and at their upper ends through a. yoke 24. Eachioo motion connection between each of the members and the yoke 24.''.lhe bracket 18 also carries a fixed stop 26 adapted to maintain theframe 19 in a predetermined operative position. For moving this frame toino eraytive position, to permit the placing of the shapes 4 over theprojections 12, the frame is provided with an operating handle 27 bymeans of which it may be swung into the dotted line position illustratedin Figure 4; until it engages the stop pin 28, i

Each of the shapes may be provided in one end thereof with an opening 29whereby the shapes may be easily engaged for simultane` ous withdrawalfrom the galvanizing pot and between the members of the scraping device.Any desired means for effecting the withdrawal may be provided.

The advantages of the present invention arise from the provision ofmeans for simultaneously cooperatingI with a plurality of individualshapes whereby each of the shapes is individually scraped with ayielding pressure to remove any surplus spelter therefrom.

We claim: 1. A scraping device for coating machines, comprising a bottommember having means to simultaneously cooperate withv a plurality ofshapes, an upper member mounted for substantially equal movement towardand from all the means on the lower member, independent yieldinglymounted means on the upper member to simultaneously cooperate with aplurality of shapes, and means for moving the upper member to anoperative position, substantially as described.

2. A scraping device for galvanizing ma.-4

cliines, comprising a member having a plurality of projections shaped toconform to parts of the shapes being galvanized, a frame movably mountedfor substantially equal movement toward and from said projections topermit the shapes to be placed in position in the device, and aplurality of independently movable members carried by said frame forcooperation with other parts of the shapes being galvanized,substantially as described.

3. A scraping device for galvanizing machines, comprising a memberhaving a plurality of fixed projections shaped to conform to parts ofthe shapes' being galvanized, a frame movably mounted for substantiallyequal-movement toward and from said rojections to permit the sha es tobe laced 1n position in the device, an a plura ity of independentlymovable members carried by said frame for cooperation with other partsof the shapes being galvanized, substantially as described.

4. A scraping device for galvanizing machines, comprislng a memberhaving a plurality of projections shaped to conform to parts of theshapes being galvanized, a frame movably mounted for substantially equalmovement toward and from said projections to permit the shapes to beplaced in position in the device, and a plurality of independentlymovable spring-pressed members carried by said frame for cooperationwith other parts of the shapes being galvanized, substantially asdescribed.

5. A scraping device for galvanizing machines, comprising a memberhaving a plurality of projections shaped to conform to parts of theshapes being galvanized, a frame movably mounted for substantially equalmovement toward and from said projections to permit the shapes to beplaced in position in the device, a plurality of' independently movablemembers carried by said frame for cooperation with other parts of theshapes being galvanized, and a separately acting means for urging eachof said movable members into contact with the shapes being scraped,substantially as described.

6. A coating machine, having av scraping device for scraping metalsections which are moved therethrough in a longitudinal direction,comprising a plurality of relatively fixed scrapers shaped to conform toa portion of the surface of the sections to be scraped, a frame pivotedon an axis perpendicular to the line of movement of sections, and a`plurality of resilient Scrapers on the Iframe shaped to conform toother portions of the .surfaces of the sections.

7. A coating machine, having a scraping device for scraping` metalsections which are moved therethrough in a longitudinal direction,comprising a plurality of relatively fixed Scrapers shaped to conform toa portion of the surface of the sections to be scra ed, a frame pivotedon an axis perpendicu ar to the line of movement of sections, aplurality of levers on the frame mounted on axes parallel to the frameaxis, a scraping device on each lever shaped to conform to the surfaceof the section to be scraped, and a spring connected to each lever.

In testimony whereof we have hereunto set our hands.

WAYNE RAWLEY. GRAND A. PLUSKEY.

